1. Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health,
2. Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions,
3. Johns Hopkins Center for Excellence in Environmental Public Health Tracking, Johns Hopkins University Bloomberg School of Public Health,
4. Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health,
5. Department of Medicine, Johns Hopkins School of Medicine and
6. Department of Health Policy and Management, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA